FASTENER LENGTH | 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
HEAD DIAMETER | 0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM |
HEAD HEIGHT | 0.107 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
HEAD STYLE | ROUND |
INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
MATERIAL DOCUMENT AND CLASSIFICATION | 1010-1020 ASSN STD 1ST MATERIAL RESPONSE OR 1060 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
MATERIAL | STEEL OVERALL |
NOMINAL THREAD DIAMETER | 0.164 INCHES |
PRIMARY WASHER MATERIAL THICKNESS | 0.031 INCHES NOMINAL |
PRIMARY WASHER OUTSIDE DIAMETER | 0.305 INCHES MINIMUM AND 0.319 INCHES MAXIMUM |
PRIMARY WASHER STYLE | SPLIT HELICAL RING |
WASHER QUANTITY | 1 |
SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
THREAD CLASS | 2A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.250 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 32 |
THREAD SERIES DESIGNATOR | UNC |